Materials and the Earth Lesson 4 Metamorphic Rocks

Materials and the Earth Lesson 4: Metamorphic Rocks Science Chemistry - Key Stage 3 Miss Willett 1

What have you learnt already? 1. What are three types of weathering? 1. Which type of rock do you find fossils in? 1. What happens to more dense fluids? 2

Properties of metamorphic rock Igneous, sedimentary, or metamorphic? Crystals Irregular layers Fossils Colourful Shiny Porous 3

Properties of metamorphic rocks Draw and label a diagram of a typical metamorphic rock 4

Metamorphic rock formation Correct my mistakes! Metamorphic rocks are made from sediment Metamorphic rocks need high heat and low pressure Rock has to melt to form metamorphic rocks 5

Metamorphic rocks: formation Draw and label a diagram to show metamorphic rocks are formed Metamorphic rock is made from… The conditions needed are high. . . 6

1. What happens when the metamorphic rock melts? 1. How does extrusive rock form? 1. How does intrusive rock form? 1. What might happen if the intrusive rock is uplifted? 7

1. What are small bits of rock called? 1. Put the stages of making sedimentary rock in order 1. How does rock get to the surface? 1. What happens to the sedimentary rock next? 8

The rock cycle Order 1 Put these steps into an order Step Rock is weathered creating sediment Sedimentary rock is buried in the crust Sediment is transported by water and deposited on a river bed Forms metamorphic rock under high temperature and pressure The rock is uplifted and weathered forming more sediment Metamorphic rock is buried and melts, forming magma Sediment is compacted and cemented forming sedimentary rock Magma cools or erupts and cools, forming igneous rock 9

Bringing it all together. . Now imagine you are a piece of limestone. Explain how you can become marble and then granite. ● I start off as ______ rock. I am weathered by… ● The sediment then… ● After that the sedimentary rock might be… ● This will form _______ and next. . KEYWORDS: acid rain, temperature, pressure, compact, deposit, cement, metamorphic, igneous, sedimentary, magma, lava, uplift 10

Bringing it all together. . 11